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प्रश्न
Tick the most appropriate answer.
Physical changes are
पर्याय
permanent
periodic
temporary
irreversible
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उत्तर
temporary
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संबंधित प्रश्न
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Make a list of different types of changes with example.
State whether the following is physical or chemical changes.
water cycle in nature —
Classify the following as physical or chemical change :
Formation of curd from milk
Classify the following as a physical or a chemical change.
Melting of wax
Differentiate between a physical change and a chemical change with reference to – Nature of change is temporary and reversible or permanent and irreversible.
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
Digestion of food is a physical change.
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
